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For remove W32.Mariofev.A virus,please clean/delete all W32.Mariofev.A infected files and Delete/Modify any values W32.Mariofev.A added to the registry as following:
Once executed, the worm drops the following files:
- %System%\[RANDOM NAME]
- %System%\bmf.cs
- %System%\ccs.so
- %System%\gh.l
- %System%\mn.n
- %System%\ntpl.bin
- %System%\nvrsma.dll
- %System%\yl.po
It may also create:
- %System%\acl.exe
- %System%\MarioForever.exe
- %DriveLetter%\MarioForever.exe
The worm then modifies the following files:
- %System%\dllcache\user32.dll
- %System%\user32.dll
It creates the following registry entries:
- HKEY_LOCAL_MACHINE\SOFTWARE\[NUMBER]\"[34 DIGIT HEX NUMBER]" = "[RANDOM DATA]"
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows\"ztpInit_Dlls" = "nvrsma"
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\"ccnt" = "[NUMBER OF INFECTION ATTEMPTS]"
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\"mid" = "[RANDOM HEX DATA]"
The worm may delete registry subkeys containing the following strings to lower security settings:
- *\shellex\ContextMenuHandlers\NOD32 Context Menu Shell Extension
- AllFilesystemObjects\shellex\ContextMenuHandlers\SpySweeper
- ALWIL Software\Avast
- Arovax AntiSpyware
- Chilkat Software, Inc.
- ComputerAssociates\eTrustPestPatrol
- Doctor Web, Ltd.
- FRISK Software International
- Grisoft\AVGAntiSpyware
- KasperskyLab
- McAfee\McAfee AntiSpyware
- McAfee\VirusScan
- Panda Software
- PepiMK Software\SpybotSnD
- SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Ad-aware 6 Personal
- SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Ad-Aware SE Personal
- SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\AntiVir PersonalEdition Classic
- SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\ClamAV
- SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SpywareBlaster_is1
- SOFTWIN\BitDefender Desktop\Maintenance\Install
- Spyware Begone!
- Symantec\Symantec AntiVirus
- SYSTEM\ControlSet001\Services\avgntflt
- SYSTEM\CurrentControlSet\Services\WinDefend
- Ukranian Antivirus center
- Vba32
- VMware, Inc.
- VMware, Inc.\VMware Tools
The worm creates a service with the following characteristics so that it runs when Windows starts:
Service name: SCNa
Display name: SCNa Service
Startup Type: Automatic
It registers the service by creating and populating the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SCNa
The worm may contact the following remote locations to report infection notification and download configuration data as well as possibly update itself:
- [http://]66.36.241.45/sdb/gate/[REMOVED]
- [http://]66.36.241.45/sdb/gate/data[REMOVED]
The worm then attempts to spread through network shares using the passwords below:
- !@#
- 1212
- 123
- 123456
- 1313
- 666
- 777
- adm
- admin
- administrator
- administrator
- asa
- pass
- password
- qaz
- qazxsw
- qqq
- qwerty
- test
- zaq
- zaqwsx
- zzz
It then attemps to copy itself as the following file:
%DriveLetter%\acl.exeRecommendationsSymantec Security Response encourages all users and administrators to adhere to the following basic security "best practices":
- Turn off and remove unneeded services. By default, many operating systems install auxiliary services that are not critical, such as an FTP server, telnet, and a Web server. These services are avenues of attack. If they are removed, blended threats have less avenues of attack and you have fewer services to maintain through patch updates.
- If a blended threat exploits one or more network services, disable, or block access to, those services until a patch is applied.
- Always keep your patch levels up-to-date, especially on computers that host public services and are accessible through the firewall, such as HTTP, FTP, mail, and DNS services (for example, all Windows-based computers should have the current Service Pack installed.). Additionally, please apply any security updates that are mentioned in this writeup, in trusted Security Bulletins, or on vendor Web sites.
- Enforce a password policy. Complex passwords make it difficult to crack password files on compromised computers. This helps to prevent or limit damage when a computer is compromised.
- Configure your email server to block or remove email that contains file attachments that are commonly used to spread viruses, such as .vbs, .bat, .exe, .pif and .scr files.
- Isolate infected computers quickly to prevent further compromising your organization. Perform a forensic analysis and restore the computers using trusted media.
- Train employees not to open attachments unless they are expecting them. Also, do not execute software that is downloaded from the Internet unless it has been scanned for viruses. Simply visiting a compromised Web site can cause infection if certain browser vulnerabilities are not patched.
For successful remove W32.Mariofev.A virus,you may also need do as following:
1. Temporarily Disable System Restore .
2. Update the virus definitions. Reboot computer in SafeMode;
3. Delete the IE temp files,some W32.Mariofev.A temp file exisit there.
4.If you failed to remove W32.Mariofev.A,please go to our remove help forum:http://help.antiviruses123.com
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